Match all punctuation chars in fs partitions and mount points.

With some recent commits we are matching a good number of custom
characters. Instead of waiting for another one that breaks it, just
match all punctuation characters. The regexp is pretty big and some
simplification is also welcomed.

fs.lua

@@ -27,7 +27,7 @@ local function worker(format)
             -- table for each mount point with gmatch
             local size, used, avail, usep, mount =
              -- Instead match all at once, including network file systems
-             line:match("^[/%w:%.-]+[%s]+([%d%.]+)[%a]?[%s]+([%d%.]+)[%a]?[%s]+([%d%.]+)[%a]?[%s]+([%d]+)%%[%s]+([/%w:%.-]+)$")
+             line:match("^[%w%p]+[%s]+([%d%.]+)[%a]?[%s]+([%d%.]+)[%a]?[%s]+([%d%.]+)[%a]?[%s]+([%d]+)%%[%s]+([%w%p]+)$")
 
             fs_info["{"..mount.." size}"]  = size
             fs_info["{"..mount.." used}"]  = used